Working Vehicle Display Switching for Automatic Steering Setup
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Solution Overview
Problem
Existing agricultural working machines lack efficient automatic steering systems that can accurately follow a scheduled traveling line, especially when the position detection system deviates, leading to errors in vehicle positioning and navigation.
Innovation Solution
A working vehicle equipped with a steering handle for manual or automatic steering, a setting switch to toggle between valid and invalid modes, a display for guidance screens, and a correction switch to adjust vehicle position based on satellite positioning and inertial measurement, allowing for real-time correction of deviations from the scheduled traveling line.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If automatic steering is implemented using only satellite positioning, then the system can achieve automated navigation, but positioning accuracy deteriorates when satellite signals deviate or are unavailable
Solution Approach 1:
The patent combines satellite positioning system (GPS) with inertial measurement unit (IMU) to create a hybrid positioning system. The satellite positioning device acquires position information while the inertial measurement device continuously tracks vehicle movements, merging both data sources to maintain positioning accuracy when satellite signals are unavailable or inaccurate.
Solution Approach 2:
The system implements feedback by continuously comparing the scheduled traveling line with actual vehicle position derived from both satellite and inertial data. The control device uses this feedback to generate steering commands that correct deviations, ensuring the vehicle follows the planned path accurately even when satellite positioning alone would be insufficient.
2Ease of operation
If the display shows only driving information during automatic steering, then the interface remains simple, but the operator cannot receive guidance on correcting position deviations
Solution Approach 1:
The display device dynamically changes its output based on the setting mode. When the setting switch is in the first position (setting mode), the display shows guidance information including the scheduled traveling line and current position. When in the second position (driving mode), it shows driving information. This dynamic adaptation provides appropriate information for each operational phase without overwhelming the operator.
Solution Approach 2:
Before automatic steering begins, the system allows operators to set the reference traveling line using the setting switch. During this preliminary setting phase, the display shows guidance information to help operators accurately define the desired path. This preliminary action ensures the scheduled traveling line is correctly established before automated navigation commences.
Data Source
AI summary
A working vehicle includes a steering handle, a vehicle body to travel by manual steering via the steering handle or automatic steering for the steering handle based on a scheduled traveling line, a setting switch to switch between valid and invalid, a setting mode to set at least the automatic steering before the automatic steering is started, and a display including a driving display portion to display driving information of the vehicle body during traveling. When the setting mode is switched to be valid, the display changes a displaying state of the driving display portion to another different displaying state different from the displaying state where the setting mode is invalid.